FIELD: chemistry.
SUBSTANCE: composition comprises a multimodal copolymer of propylene (U) with, at least, one comonomer selected from alpha-olefins having 2 to 4-8 carbon atoms in the amount of 4.0 to 10.0 moll. %. The composition has a MFR2 melt flow rate (2.16 kg, 230°C) of 0.05 to 1.00 g/10 min, the content of substances soluble in cooled xylene (XCS) from 6.0 to 13.5 wt %, determined at a temperature of 25°C in accordance with ISO 16152, the polydispersity coefficient PI of 2.5 to 4.0 Pa-1, and the elastic module at bending is not more than 1200.
EFFECT: composition has a good balance of mechanical properties, including impact properties and stiffness, flexibility, and machinability properties.
24 cl, 3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| COMPOSITION OF MULTIMODAL POLYPROPYLENE FOR APPLICATION IN PIPES | 2014 |
|
RU2625794C2 |
| COMPOSITION OF STATISTICAL PROPYLENE COPOLYMER FOR APPLICATION IN PIPELINES | 2014 |
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RU2441890C2 |
| BETA-NUCLEATED PROPYLENE COPOLYMER | 2008 |
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|
RU2768931C2 |
| POLYPROPYLENE COMPOSITION WITH EXCELLENT LACQUER COATING ADHESION | 2017 |
|
RU2721832C1 |
| RUBBER COMPOSITION WITH SUPERIOR IMPACT STRENGTH AT LOW TEMPERATURE | 2013 |
|
RU2654698C2 |
| POLYOLEFIN COMPOSITION WITH IMPROVED IMPACT STRENGTH AND BLUSHING RESISTANCE | 2019 |
|
RU2782633C1 |
